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Common cuckoo Cuculus canorus parasitism, antiparasite defence and gene flow in closely located populations of great reed warblers Acrocephalus arundinaceus

In English

Författare

  • Csaba Moskat
  • Bengt Hansson
  • Lilla Barabas
  • Istvan Bartol
  • Zsolt Karcza

Summary, in English

In Hungary an unusually high rate of parasitism on the great reed warbler Acrocephalus arundinaceus by the common cuckoo Cuculus canorus has been maintained for at least the last one hundred years. We evaluated parasitism rate, antiparasite defence and genetic differentiation among Hungarian great reed warblers at three sites located 40-130 km from each other, where hosts suffered from a high (41-68%), moderate (11%), and almost no (< 1%) parasitism. We were especially interested in whether the level of antiparasite defence was related to the local parasitism rate, and, if not, to understand why. There was no difference among the three sites in the responses to experimental parasitism by non-mimetic model cuckoo eggs (rejection rate 71-82%), which can be explained by strong gene flow between populations: there was low level of philopatry and no genetic differentiation in the region. Reproductive success of the host in the heavily parasitised site was about 54% of that in the unparasitised site, indicating that long-term persistence of host populations in highly exploited areas depends on continuous immigration.

Publiceringsår

2008

Språk

Engelska

Sidor

663-671

Publikation/Tidskrift/Serie

Journal of Avian Biology

Volym

39

Issue

6

Dokumenttyp

Artikel i tidskrift

Förlag

Wiley-Blackwell

Ämne

  • Biological Sciences

Status

Published

Projekt

  • Long-term study of great reed warblers

Forskningsgrupp

  • Molecular Ecology and Evolution Lab

ISBN/ISSN/Övrigt

  • ISSN: 0908-8857